Classifications

• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
  • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
  • F02B37/00—Engines characterised by provision of pumps driven at least for part of the time by exhaust
  • F02B37/12—Control of the pumps
  • F02B37/18—Control of the pumps by bypassing exhaust from the inlet to the outlet of turbine or to the atmosphere
  • F02B37/183—Arrangements of bypass valves or actuators therefor
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
  • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
  • F01D17/00—Regulating or controlling by varying flow
  • F01D17/10—Final actuators
  • F01D17/105—Final actuators by passing part of the fluid
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
  • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
  • F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
  • F16K5/06—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having spherical surfaces; Packings therefor
  • F16K5/0647—Spindles or actuating means
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
  • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
  • F05D2220/00—Application
  • F05D2220/40—Application in turbochargers
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
  • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
  • Y02T10/00—Road transport of goods or passengers
  • Y02T10/10—Internal combustion engine [ICE] based vehicles
  • Y02T10/12—Improving ICE efficiencies

Definitions

• the invention relates to an exhaust gas turbocharger for an internal combustion engine, with a turbine, a fluidically parallel to the turbine
• the invention further relates to a method for producing an exhaust gas turbocharger.
• the internal combustion engine is used for example for driving a
• the internal combustion engine may be part of the motor vehicle.
• the internal combustion engine has the exhaust gas turbocharger. This serves to provide air,
• Pressure level is in an external environment of the internal combustion engine.
• the exhaust gas turbocharger or the turbine of the exhaust gas turbocharger, the exhaust gas generated by this is supplied during operation of the internal combustion engine.
• the exhaust gas flows through or overflows the turbine, wherein contained in the exhaust gas enthalpy or
• Air is drawn in from the compressor, in particular from the outside environment, and compressed, ie brought to a higher pressure level.
• the compressed air is subsequently supplied to the internal combustion engine.
• the performance and / or the efficiency of the internal combustion engine can be improved.
• bypass provided through which the exhaust gas can flow around the turbine.
• the bypass line is assigned the Queritessverstellelement, by means of which their flow area can be adjusted, preferably steadily.
• Valve housing and a ball valve body has.
• Cross-section adjustment element is present as a ball valve, and that a
• Valve element of the ball valve floatingly mounted in a valve housing and disposed between two also provided in the valve housing bearing shells.
• the cross-section adjustment is designed as a ball valve. This means that the valve element of the
• Ball valve is at least partially spherical or spherical, wherein the desired flow cross-section of the bypass line is adjustable by a rotational movement of the valve element.
• valve element of the ball valve should be floatingly mounted in the valve housing.
• valve element is not is only rotatably disposed in the valve housing, but also exists in at least one other direction with game, so a certain
• the play is in a direction which is angled with respect to an axis of rotation of the valve element, that includes an angle of greater than 0 ° and less than 180 ° with it.
• the direction is perpendicular to the axis of rotation.
• the valve element is arranged between the bearing shells, which are also arranged in the valve housing. At least one of the bearing shells is preferably a valve seat, with which the
• Valve element for adjusting the flow cross section of the
• Bypass line interacts.
• the flow cross-section can be completely blocked, only partially released or completely released. Due to the floating mounting of the valve element this can - especially at least partially or completely blocked
• bearing shells can be provided for the provision of end stops for the valve element.
• this is the
• Valve element arranged with clearance between the bearing shells. This means in particular that the valve element always bears against at most one of the bearing shells, while it is arranged at a distance from the respective other bearing shell or at least not in contact with it. Of course, it can also be provided that the valve element is arranged such that it is not in contact with any of the bearing shells, but rather exists between them.
• the bearing shells each have a part-spherical receiving opening for the valve element.
• the valve element is at least partially, in particular completely, spherical.
• the bearing shells now have complementary receiving openings, which are part-spherical and insofar for receiving a portion of the
• Valve element are formed.
• the valve element preferably has a central
• Flow cross section has as the flow channel.
• valve element In at least one angular position of the valve element is the
• Flow cross-section of the flow channel in flow communication with the flow passages of the bearing shells. Accordingly, fluid can flow from the flow inlet in the direction of the flow outlet, wherein it flows through the flow passages and the flow cross-section.
• the flow cross-section in at least one angular position of the valve element is aligned with both
• Flow passages of the bearing shell so that the lowest possible flow resistance is realized. This is achieved in particular by the flow channel having the same flow cross-section as the flow passages.
• at least one of the bearing shells made of an elastic material. In particular, this is the bearing shell on which the valve seat of the cross-sectional element is present, with which the
• Valve element for adjusting the flow cross section of the
• Bypass line interacts.
• both bearings are particularly preferably made of the elastic material.
• Valve element and the two bearing shells can be used together in the valve housing.
• the bearing shells each have the receiving opening for the valve element. This can be
• valve element For mounting the exhaust gas turbocharger, the valve element is now arranged in the receiving openings of the bearing shells. Subsequently, the bearing shells are inserted together with the valve element through the mounting opening in the valve housing.
• the mounting opening has corresponding dimensions in this respect.
• a receptacle for the arrangement of the valve element and the bearing shells is provided in the valve housing, which is designed such that the bearing shells and the valve element after the Insertion through the mounting hole in the recording are held securely in this, so that only a removal of the assembly through the mounting hole is possible, but not a shift in a different direction.
• a development of the invention provides that the mounting opening is closed by means of a lid, in which a passage opening is formed for an operatively connected to the valve element adjusting shaft.
• the mounting hole is closed by means of the lid.
• the adjusting shaft is provided, which is operatively connected to the valve element.
• the passage opening is now provided, through which protrudes the adjusting shaft of the valve housing.
• an adjusting device is provided, which in principle may be configured arbitrarily.
• the actuator is, however, electrical or pneumatic.
• the adjusting shaft is rotatably arranged in the passage opening,
• the cover has at least one retaining projection which rests against the bearing shells. After mounting the cover to the valve housing, the retaining projection bears against the bearing shells.
• a plurality of holding projections are provided, wherein preferably each
• Bearing shell is associated with one of the retaining projections.
• the retaining projection or the retaining projections are designed to, the
• Passage opening for the adjusting shaft is present. While the cover is attached to the valve housing, for example screwed to this, engages the lid to the bearing element.
• the bearing element is attached exclusively to the lid and so far only indirectly connected to the valve housing. The bearing element is penetrated by the adjusting shaft, to which it has the further passage opening.
• Adjusting shaft is so far arranged rotatably in the further passage opening, in particular rotatably mounted in it.
• Inner diameter which is greater than the outer diameter of the adjusting shaft. The adjustment is so far in the passage opening and / or the further passage opening in the radial direction with respect to her
• Rotary axis not held, but rather arranged with game.
• Such a configuration of the passage opening or the further passage opening in particular ensures the floating mounting of the valve element in the valve housing.
• the valve element is so far not set via the adjusting shaft with respect to the valve housing, in particular not in the radial direction with respect to the axis of rotation.
• a particularly preferred embodiment of the invention provides that between the cover and the bearing element, the adjusting shaft in the circumferential direction encompassing, in particular in the circumferential direction is arranged continuously sealingly to her fitting, bearing sleeve.
• the bearing sleeve is held between the lid and the bearing element.
• Circumferential direction with respect to its axis of rotation preferably completely. It may be provided that it also seals against it,
• the bearing sleeve serves insofar a storage of the adjusting shaft with respect to the valve housing. Nevertheless, the floating storage of the
• Ensuring valve element preferably, the bearing sleeve made of a flexible, in particular elastic material.
• the bearing sleeve made of a flexible, in particular elastic material.
• a further preferred embodiment of the invention provides that the adjusting shaft is formed in one piece and / or the same material with the valve element. Particularly preferably, the adjusting shaft is produced together with the valve element. Alternatively, it may of course be provided that the adjusting shaft is produced separately from the valve element and subsequently connected to it in a materially bonded manner, for example by means of welding or the like. However, it is always important that the adjusting shaft is rigidly connected to the valve element. In addition, it is advantageous if it consists of the same material and insofar exists in the same material with the valve element.
• valve housing is arranged in an exhaust pipe to which a Turbine outlet of the turbine is connected, wherein the exhaust pipe is larger in cross-section than the valve housing, or that the valve housing is integrated in a turbine housing of the turbine.
• the exhaust pipe serves to discharge exhaust gas from the turbine.
• Exhaust pipe to a turbine outlet of the turbine or a turbine housing of the turbine Exhaust pipe to a turbine outlet of the turbine or a turbine housing of the turbine.
• the exhaust gas that has flowed through the turbine is discharged by means of the exhaust pipe, in particular in the direction of the outside environment.
• the valve housing should now be arranged in the exhaust pipe such that it blocks only a small part of the flow cross section of the exhaust pipe. Accordingly, the exhaust pipe is formed so that it is larger in cross-section than the valve housing or a flow cross-section which is greater than the cross section of the valve housing.
• the exhaust gas coming from the turbine thus flows past or flows around the valve housing.
• Turbine housing of the turbine is integrated.
• the valve housing is formed by a region of the turbine housing.
• the bypass line is preferably at least partially, in particular completely, in the turbine housing.
• the bypass line connects at least one exhaust gas inlet port of the
• the exhaust pipe is connected.
• the cross-section adjustment element or the ball valve, together with its valve housing, is present in the turbine housing. Accordingly, the Querterrorismsverstellelement is arranged in the bypass line.
• the bypass line is in flow communication with all exhaust inlet ports.
• bypass line extends from the turbine into the exhaust pipe into a flow inlet of the valve housing.
• the bypass line is connected upstream of the turbine.
• a bypass connection is formed in the turbine housing for this purpose, with which the bypass line is flow-connected. The bypass line now protrudes from the turbine or the turbine housing into the exhaust pipe, right up to the
• Turbine outlet of the turbine arranged in the exhaust pipe is at least 0.1, at least 0.25, at least 0.5, at least 0.75 or at least 1.0.
• valve housing has a flow outlet which widens in the direction away from the valve element. Through the flow outlet, the fluid flowing through the bypass line can escape from the valve housing.
• the flow outlet arranged in the exhaust pipe, so that the guided around the turbine through the bypass pipe with the exhaust gas Mixed exhaust gas, which has flowed through the turbine.
• the flow outlet is designed as a diffuser, ie widens in the direction away from the valve element or turbine direction. This means that the flow cross-section of the flow outlet in this direction is greater, preferably continuously or
• the invention further relates to a method for producing a
• Exhaust gas turbocharger for an internal combustion engine in particular one
• the exhaust gas turbocharger has a turbine, a fluidically parallel to the turbine provided bypass line and a Querterrorismsverstellelement for adjusting the flow cross-section of the bypass line. It is provided that the Querterrorismsverstellelement is present as a ball valve, and that a valve element of the ball valve floatingly mounted in a valve housing and disposed between two also provided in the valve housing bearing shells.
• valve housing Mounting opening of the valve housing are inserted into this or in its recording. Likewise, the mounting opening is preferably subsequently closed by means of the lid. On This way, a simple assembly of the exhaust gas turbocharger is ensured.
• FIG. 1 shows a longitudinal section through an exhaust gas turbocharger for an internal combustion engine, wherein in a exhaust pipe a cross-section adjustment element for adjusting the
• Figure 4 is a longitudinal sectional view of an exhaust gas turbocharger in a further embodiment.
• FIG. 1 shows a longitudinal section through a region of an internal combustion engine 1, in particular through a region of a combustion engine 1
• the exhaust gas turbocharger 2 has a turbine 3 with a turbine housing 4 and a turbine runner or turbine runner arranged in the turbine housing 4. At one
• the turbine 3 further has a bypass line 7, which
• bypass line 7 and the bypass line 7 are connected to a bypass port 8 of the turbine housing 4.
• Bypass connection 8 are connected upstream of the turbine impeller and are so far in parallel to the turbine 3 and the
• the exhaust gas supplied to the turbine 3, coming from the internal combustion engine 1, for example, can either flow through the turbine 3 or overflow the turbine runner or, alternatively, be guided past the turbine 3 or the turbine runner through the bypass line 7.
• the bypass line 7 is assigned a Queritessverstellelement 9, which serves to adjust the flow cross-section of the bypass line 7. With the help of the cross-section adjustment element 9, the extent can be adjusted.
• the cross-section adjustment element 9 is designed as a ball valve. It has a valve housing 10, which has a flow inlet 11 and a flow outlet 12. The flow inlet 11 is connected to the
• the cross-section adjustment element 9 has a valve element 13 which is mounted in a floating manner in the valve housing 10. On both sides of the valve element 13 bearing shells 14 and 15 are arranged in the valve housing 10.
• the valve element 10 is substantially spherical or spherical.
• the bearing shells 14 and 15 each have one
• the valve element 13 has a flow channel 17 which, for example, is formed centrally in it and passes completely through it.
• the flow channel 17 has a circular cross-section.
• a flow passage 18 is formed in the bearing shells. This preferably has the same
• Flow channel 17 are arranged in alignment.
• valve housing 10 there is also a flow channel 19, which is connected on the one hand to the flow inlet 11 and on the other hand to the flow outlet 12.
• the flow channel 19 preferably has a constant flow cross-section.
• valve housing 10 has a mounting opening 20 through which the valve element 13 and the two bearing shells 14 and 15 can be inserted together into the valve housing 10.
• Mounting opening 20 has corresponding recesses.
• the mounting opening 20 is closed by means of a lid 21, which is preferably attached directly to the valve housing 10, in particular screwed to this.
• a lid 21 is a part of the valve housing 10, in particular screwed to this.
• the lid 21 is a part of the valve housing 10, in particular screwed to this.
• Passage opening 22 is provided.
• an adjusting shaft 23 is arranged, which is at least operatively connected to the valve element 13.
• the adjusting shaft 23 is particularly preferably designed in one piece and / or with the same material as the valve element 13.
• a bearing element 24 is arranged, in particular attached to the cover 21, preferably screwed thereto.
• Bearing element 24 has a further passage opening 25 through which the adjusting shaft 23 protrudes. Particularly preferred are the
• the adjusting shaft 23 is floatingly mounted in the passage opening 22 and the passage opening 25, ie not in the radial direction with respect to a rotational axis 26 of the adjusting shaft 23 completely fixed, but rather is stored with game.
• a bearing sleeve 27 is arranged, preferably held by clamping between the cover 21 and the bearing element 24.
• the bearing sleeve 27 is located with its outer periphery preferably on a wall 28, for example, a recess 29 of the lid 21 at.
• the bearing sleeve 27 bears against both the cover 21 and the bearing element 24.
• the bearing element 24 holds the bearing sleeve 27 in the recess 29.
• the bearing element 24 protrudes, for example
• the bearing sleeve 27 completely surrounds the adjusting shaft 23 in the circumferential direction with respect to the axis of rotation 26. In particular, it lies in the circumferential direction continuously on the adjusting shaft 23, in particular sealing.
• the bearing sleeve 27 is made of an elastic material. The bearing sleeve 27 allows so far a movement of the adjusting in the radial direction with respect to the axis of rotation 26 within a particular game. This has the advantage that also the valve element 13 within the
• Valve housing 10 is not completely fixed in the radial direction.
• a valve seat 30 of the Queritesverstellelements 9 is formed.
• the bearing shell 14 is also made of an elastic material, preferably, this may also apply to the bearing shell 15.
• bearing shells 14 and 15 may also be made of a composite material, in particular consisting of a metal mesh
• the adjusting shaft 23 On its side facing away from the valve element 13, the adjusting shaft 23 has a torque transmission element 31. This one stands out
• a drive device of the cross-section adjustment element 9 engages the
• the drive device may be formed, for example, electrically or pneumatically.
• FIG. 2 shows an exploded view of the
• the lid 21 has at least one retaining projection 32, which, for example, hollow cylindrical, in particular
• Exhaust gas turbocharger 2 engages in the valve housing 10. There is the
• Holding projection 32 on the bearing shells 14 and 15 and urges them into the valve housing 10 and holds them in this.
• a seal 33 is provided between the cover 21 and the valve housing 10, which in the circumferential direction with respect to the
• Valve housing 10 is on the side of the flow inlet 11 a
• Attached fastening ring 34 This is preferably continuous with its inner circumference to the valve housing.
• the fastening ring 34 can also be designed as a sealing ring.
• FIG. 3 shows a detail sectional view of the cross-section adjustment element 9. It can again be clearly seen that the inner diameters of the passage openings 22 and 25 are larger than the outer diameter of the adjusting shaft 23.
• Adjusting shaft 23 in the radial direction with respect to the axis of rotation 26 in the valve housing 10 is not completely set, but rather to store with a certain game, the bearing sleeve 27 is provided for this reason, which consists in particular of an elastic material.
• FIG. 4 shows the exhaust gas turbocharger 2 in a further embodiment. This is fundamentally similar to the first one already described Embodiment, so that express reference is made to the above statements. The main difference to the first
• Embodiment lies in the integration of the valve housing 10 in the turbine housing 4.
• the bypass line 7 is also formed only in the turbine housing 4.
• Turbine housing 4 and the turbine outlet 5 respectively
• Flow cross section of the bypass line 7 is adjustable.
• valve element 13 and the bearing shells 14 and 15 are as already explained in the valve housing 10 and thus in the one shown here
• the turbine housing 4 has, for example, at least some, in particular all, of the properties of the valve housing 10 described above.
• the mounting opening is formed only directly in the turbine housing 4.
• the bearing element 24 is configured in one piece and with the same material as the cover 21.
• the bearing sleeve 27 is urged by the cover 21, for example, in the direction of the valve element 13, in particular on the valve element 13, so that the bearing sleeve 27 rests against the valve element 13.
• the valve element 13 is arranged at a distance from the bearing sleeve 27. Accordingly, in the second embodiment, as in the first embodiment, there is not a dedicated passage opening 22 having inner dimensions smaller than the outer dimensions of the bearing sleeve 27.
• the torque transmission element 31 may in the second
• Embodiment designed as a polygon designed as a polygon.
• the bearing shells 14 and 15 pass through the mounting opening 20 completely or at least almost completely. Accordingly, the retaining projections 32 of the lid 21 described for the first embodiment are not necessary.

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• Engineering & Computer Science (AREA)
• General Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Chemical & Material Sciences (AREA)
• Combustion & Propulsion (AREA)
• Supercharger (AREA)

Priority Applications (3)

Applications Claiming Priority (2)

Publications (1)

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ID=54365189

Family Applications (1)

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Citations (4)

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• 2014
  • 2014-10-27 DE DE102014015882.9A patent/DE102014015882A1/de not_active Withdrawn
• 2015
  • 2015-10-24 EP EP15787898.4A patent/EP3212911B1/de active Active
  • 2015-10-24 US US15/522,153 patent/US10890107B2/en active Active
  • 2015-10-24 WO PCT/EP2015/002116 patent/WO2016066255A1/de active Application Filing
  • 2015-10-24 CN CN201580058111.0A patent/CN107110010B/zh active Active

Patent Citations (4)

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